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Fertilizing Greenhouse Plants
from: Lawn and Garden MagicA newly potted plant needs time to absorb or take in the fertilizer you apply in order to grow new roots.
How you fertilize and what type of fertilizer you use depends on the type of plants you're growing in your greenhouse. Every crop has it's own specific requirement regarding nutrients and it's up to you to provide these requirements.
Regarding house plants, it's often easier to fertilize a large group together. Plants in general should be fertilized every one to two months while there is rapid growth, and throughout the entire winter season, once or twice.
Alternatively, you can apply fertilizer more often if you're using a liquid fertilizer that has been diluted in water. This familiarizes certain plants that otherwise may be injured when you use a full strength fertilizer. Half of the recommended strength or dosage means, in general, that you use only half the fertilizer in every plant.
Annual plants will flourish rapidly and so they will require fertilization every two weeks throughout their "short season". There are some flowering plants, such as the Azalea, that must not have fertilizer applied while in they're blooming or flowering.
Most fertilizers usually have considerable amount of nitrogen (50%); they contain the preferred amount of nitrate and are usually labeled and identified as "peat-lite". This type is preferred and recommended for greenhouse hobbiests. You can verify the N-P-K ratio by reading the label found on the fertilizer bag.
Fertilizers are usually applied at a ratio of "200 ppm nitrogen" fertilizer like "21-5-20" or "20-10-20". This is completed by continuous liquid application; this ratio is the basis for most pot grown "greenhouse plants". The rate may be adjusted downward or upward depending on what the individual plant requires.
Any pre-mixed or ready mixture of fertilizer for the kind of plants that you grow is acceptable; for most flowering and foliar plants. An N-P-K ratio analysis that is similar to "1-2-1" will supply a balanced growth.
Soluble fertilizers can be also be applied and will deliver faster results compared to solid fertilizers or "slow release" gravel-like fertilizers. The solution can be applied in the same manner as regular watering, by using the fertilizer solution instead of water, making certain that the plant soil is slightly moist before application. Never apply fertilizer solution onto plants with dry soil because the roots can be injured by the fertilizer chemicals; moist soil further dilutes the chemicals.
Apply fertilizers always following or much weaker dose than the suggested dilution strength, and not stronger, as seedlings, newly established cuttings, and developing plants will derive benefit from much weaker solutions; stronger solution will only injure young and soft roots.
There are many injections or siphon devices available in the market to make application of soluble fertilizers much easier; however, when you use them, be certain that you install "backflow preventers" in order to keep the nutrients or chemicals in the fertilizer solution from contaminating your water supply in the home. Likewise do not water your plants with a "water-softened" water due to its "high salt" content.
Recommended Fertilizer Products
A mixture of floramicro, florabloom and floragro enables you to combine a wide range of many different nutrient blends or solutions that will fulfill the specific needs of just about any type of plant you grow, and at different stages of the plants life.
This is done by changing the mixture combinations as well as the general strength of your solution. You can combine different ratios and different strength of nutrients by adjusting the water quantity when blending floragro, floramicro and florabloom.
Calcium Nitrate in Greenhouse Grade may be used in large scale growing. It can be economical to buy fertilizers in 50-pound quantities. Calcium Nitrate in Greenhouse Grade and Hydro-Gro are great combinations to achieve complete nutrient blend.
Greenhouse plants need your attention, so always check on them dauly to make sure they're free from disease and pests which will allow you to act immediately if a problem should arise. It's also wise to know the characteristics of each type of plant you grow in your greenhouse.
So have fun taking care of your plants!
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